Ellis, N. R. (1966). International review of research in mental retardation. v. 1- [c1966-. Academic Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEllis, Norman R. International Review of Research in Mental Retardation. V. 1- [c1966-. New York: Academic Press, 1966.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEllis, Norman R. International Review of Research in Mental Retardation. V. 1- [c1966-. Academic Press, 1966.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.